That's a synonymous of great UX, considering all the functionalities it offers, @adam_coinos_io still manage to offer a such minimalistic and intuitive interface (despite all the tech challenges he had to face lately)

> `*` Made a mistake in previous comment, coinos.io is actually a custodial service, it could be non-custodial if installed in self-hosted infra. But never seen another or tried myself (yet). 

supratic

lightning

List of Bitcoin Swap providers in 2025 - Lightning ←→ Onchain (and more)

I recommend it to all beginners 

Because I have recommended it so much I have used it more than I anticipated 